import java.util.*;

/**
 * @author LKQ
 * @date 2022/6/14 16:19
 * @description
 */
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNext()) {
            int m = in.nextInt();
            int x = m * m - m + 1;
            String ans = "";
            int cnt = 0;
            for (int i = x; cnt < m; i += 2) {
                ans += i + "+";
                cnt++;
            }
            System.out.println(ans.substring(0, ans.length() - 1));
        }
    }
}
